diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-4.19/950-0098-mcp2515-Use-DT-supplied-interrupt-flags.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-4.19/950-0098-mcp2515-Use-DT-supplied-interrupt-flags.patch | 36 |
1 files changed, 0 insertions, 36 deletions
diff --git a/target/linux/bcm27xx/patches-4.19/950-0098-mcp2515-Use-DT-supplied-interrupt-flags.patch b/target/linux/bcm27xx/patches-4.19/950-0098-mcp2515-Use-DT-supplied-interrupt-flags.patch deleted file mode 100644 index 13f97962f9..0000000000 --- a/target/linux/bcm27xx/patches-4.19/950-0098-mcp2515-Use-DT-supplied-interrupt-flags.patch +++ /dev/null @@ -1,36 +0,0 @@ -From 612a3f0adcf98854dcbe8228551b941b76c6af2c Mon Sep 17 00:00:00 2001 -From: Phil Elwell <phil@raspberrypi.org> -Date: Tue, 14 Nov 2017 11:03:22 +0000 -Subject: [PATCH] mcp2515: Use DT-supplied interrupt flags - -The MCP2515 datasheet clearly describes a level-triggered interrupt -pin. Therefore the receiving interrupt controller must also be -configured for level-triggered operation otherwise there is a danger -of a missed interrupt condition blocking all subsequent interrupts. -The ONESHOT flag ensures that the interrupt is masked until the -threaded interrupt handler exits. - -Rather than change the flags globally (they must have worked for at -least one user), allow the flags to be overridden from Device Tree -in the event that the device has a DT node. - -See: https://github.com/raspberrypi/linux/issues/2175 - https://github.com/raspberrypi/linux/issues/2263 - -Signed-off-by: Phil Elwell <phil@raspberrypi.org> ---- - drivers/net/can/spi/mcp251x.c | 3 +++ - 1 file changed, 3 insertions(+) - ---- a/drivers/net/can/spi/mcp251x.c -+++ b/drivers/net/can/spi/mcp251x.c -@@ -948,6 +948,9 @@ static int mcp251x_open(struct net_devic - priv->tx_skb = NULL; - priv->tx_len = 0; - -+ if (spi->dev.of_node) -+ flags = 0; -+ - ret = request_threaded_irq(spi->irq, NULL, mcp251x_can_ist, - flags | IRQF_ONESHOT, DEVICE_NAME, priv); - if (ret) { |